I REALLY HATED THIS OBEISANCE BY REAGLE TO HIS DILETTANTE ATTEMPTS AT PUNNERY. SUCH PEDESTRIAN ATTEMPTS AT TURNING A WORD ONLY SHOWS HIS DISDAIN FOR TRUE INGENUITY WITH THE USE OF WORDS, AS USUAL, HE SELLS HIS SOUL TO THE POPULAR GENRES BECAUSE HE IS NOT ERUDITE ENOUGH TO USE THE MAGIC OF OUR ENGLISH LANGUAGE AND ITS POWERFUL AND COMPLEX VOCABULARY TO BUILD A TRULY LEARNED "PUZZLER". IS IT ANY WONDER READERS LIKE MYSELF ARE CANCELING OUR NEWSPAPER SUBSCRIPTIONS WHEN WE HAVE TO PUT UP WITH SUCH MOCKERY OF OUR LANGUAGE?

I don't know how to break it to you, but this isn't a pun theme. It's a wordplay theme in which vowels trade places. Merl's got a deep fondness for puns as well as a true gift for all sorts of wordplay.